They are not different

Girl with a Pearl Earring

My father had worked with Catholics and told me that they were no different from us. If anything they were less solemn. They liked to eat and drink and sing and game. He said this almost as if he envied them. 

So wise so young

http://shakespeare.mit.edu/richardiii/full.html

GLOUCESTER
[Aside] So wise so young, they say, do never live long.

Real secret of success

Mark Twain "Roughing It" (Polish title: "Pod gołym niebem")

We never touched our tunnel or our shaft again. Why? Because we judged
that we had learned the real secret of success in silver mining--which
was, not to mine the silver ourselves by the sweat of our brows and the
labor of our hands, but to sell the ledges to the dull slaves of toil and
let them do the mining!

A single tear

Lord Byron, Don Juan (digression on siege of Ismail by Russian army, canto VIII)

The drying up a single tear has more

Of honest fame, than shedding seas of gore.

Defect

Developer to tester.

Mad let us grant him, then: and now remains
That we find out the cause of this effect,
Or rather say, the cause of this defect,
For this effect defective comes by cause:
Thus it remains, and the remainder thus. 

http://www.clicknotes.com/hamlet/H22.html

sanctimonious pirate

Very often developers add a lot of assertion or debug code to the program during developing phase but remove it in the production release.

Measure for Measure

LUCIO

    Thou concludest like the sanctimonious pirate that
    went to sea with the Ten Commandments, but scraped
    one out of the table.

Second Gentleman

    'Thou shalt not steal'?

LUCIO

    Ay, that he razed.

Legacy code

A motto of all developers working with legacy code:

John Keats, "Hyperion"

“But cannot I create?  
“Cannot I form? Cannot I fashion forth  
“Another world, another universe,  
“To overbear and crumble this to nought?  
“Where is another chaos? Where?

One day hero

Do you think that one day hero is the invention of our time ? You are wrong.

 Don Juan by Lord Byron

I want a hero: an uncommon want,
       When every year and month sends forth a new one,
     Till, after cloying the gazettes with cant,
       The age discovers he is not the true one;

Keep smiling

My most beloved quotation:

Anna Komnene, The Alexiad I/15

When I think of all this, a smile rises to my lips as I wield my pen by the light of my lamp.

Anna Komnena, Aleksjada I/15, tłumaczenie: Oktawiusz  Jurewicz

Gdy myślę o tym, przychodzi mi chęć do śmiechu. Uśmiech pojawia się mi na ustach, gdy wodzę piórem w świetle lampy.

Always keep smiling even if you are sent to convent for the rest of your live.